EP 0361529 A3 19911113 - VOLTAGE CONTROLLED OSCILLATOR
Title (en)
VOLTAGE CONTROLLED OSCILLATOR
Publication
Application
Priority
JP 24637988 A 19880930
Abstract (en)
[origin: EP0361529A2] A voltage controlled oscillator comprises a differential circuit composed of first and second MOS transistors each having a drain connected to a gate of the other MOS transistor and each having a source connected to a constant current source, a capacitor connected to couple between the sources of the first and second MOS transistors, a first current mirror circuit having an input connected to the drain of the first MOS transistor and an output connected to the second MOS transistor, and a second current mirror circuit having an input connected to the drain of the second MOS transistor and an output connected to the first MOS transistor. A current value of the constant current sources is controlled to cause to change an oscillation frequency.
IPC 1-7
IPC 8 full level
H03K 3/354 (2006.01)
CPC (source: EP US)
H03K 3/354 (2013.01 - EP US)
Citation (search report)
- [Y] IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS, vol. 35, no. 9, September 1988, pages 1182-1185, New York, US; I.G. FINVERS et al.: "Analysis of a source-coupled CMOS multivibrator"
- [Y] WESCON CONFERENCE RECORD, vol. 24, 16th - 18th September 1980, pages 26/4/1 - 26/4/6; R. KASH: "Analog MOS on semi-custom integrated circuits"
- [Y] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 17, no. 9, February 1975, pages 2582-2583, New York, US; J.L. CHU et al.: "Low-power, high-speed sense latch"
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0361529 A2 19900404; EP 0361529 A3 19911113; EP 0361529 B1 19950329; DE 68921952 D1 19950504; DE 68921952 T2 19951214; JP H0294914 A 19900405; US 4947140 A 19900807
DOCDB simple family (application)
EP 89118253 A 19891002; DE 68921952 T 19891002; JP 24637988 A 19880930; US 41568989 A 19891002